AI-generated conjecture · a wager, not a finding

The calendar with too many months

Status: Anticipated · untested

Status is derived only from the shepherd-authored triage/prediction data above -- community submissions and claims are a separate overlay and can never change it (see the participation panel below).

This is a proposed connection between two domains, generated by a language model. It is not an article and not evidence: it sits below the evidence/publication boundary. A quantitative prediction and a named kill-dataset are attached (when registered) so the claim stays falsifiable rather than merely evocative.

Claim (verbatim)

In 2023 Bennett Bacon and colleagues (Cambridge Archaeological Journal 33/3) argued that the dots, lines and a 'Y' mark placed beside Upper Palaeolithic animal images are a phenological notation: the count of marks in a sequence records the month, reckoned from the onset of spring, in which that species mates, gives birth, or aggregates, and the 'Y' (a line inside a line) means 'giving birth'. The reading is anchored to modern analogues of each animal's breeding calendar, and it was published with a data table of sequences, species and mark-counts. It is exactly the kind of proto-writing claim this lane treats as decipherment-instability data rather than settled fact. The model carries a hard internal ceiling that its authors did not foreground as a test: a lunar-month calendar reckoned within a single year cannot index more than about thirteen months. So the distribution of sequence lengths is decisive on the model's own terms. A true within-year month-count should pile up in the short breeding-season range and never exceed the ceiling; a comfortable tail of long sequences would mean the marks are counting something else, or nothing countable, and the calendar reading fails without any appeal to what the makers believed.

Prediction clause (verbatim)

Prediction: re-tallying the Bacon et al. 2023 supplementary dataset of dot/line sequences, the fraction of sequences whose mark-count exceeds 13 (the within-year lunar-month ceiling the model imposes) will exceed 10 percent, and a label-permutation test - shuffling the species-to-birth-month assignment 10,000 times - will place the reported mark-count-versus-phenological-month correlation inside the middle 90 percent of the shuffled null (primary clause: the >10 percent over-ceiling fraction; the failed permutation test is the corroborating clause). Coverage guard: if fewer than 40 distinct (species, sequence) pairs survive the authors' own inclusion criteria the test voids for insufficient degrees of freedom rather than resolving.

Kill-dataset (verbatim)

Kill: the Bacon, Khatiri, Palmer, Freeth, Pettitt & Kentridge (2023, Cambridge Archaeological Journal) article and its supplementary data table - count the fraction of scored sequences with more than 13 marks, and re-run their mark-count/birth-month association under a 10,000-fold permutation of the species-month labels. Both operations run directly on the published SI.

Nobody has run this test. The kill-data is named above. If you can run it — or you know the paper that already settles it — claim the kill or submit the prior scholarship. Kills and prior scholarship are credited here, by name, as they come in.

Provenance

Run: Fresh agent generation · model: claude-fable-5

Fresh blind generation by claude-fable-5, 2026-07-17, deep-prehistory wave against real published prehistoric corpora (von Petzinger's Upper-Palaeolithic geometric-sign database; the Bacon et al. 2023 CAJ phenological-notation dataset and its rebuttals; the Marshack vs d'Errico notation re-readings; Snow's hand-stencil digit-ratio tables; the Gargas/Cosquer incomplete-hand catalogues; Blombos/Diepkloof engraved-object inventories; the Reznikoff/Fazenda cave-acoustic surveys; the Geissenkloesterle/Hohle Fels/Isturitz flute corpus and the Divje Babe controversy; Berezkin's Analytical Catalogue and d'Huy's motif phylogenies; Nunn & Reid's 21 drowned-coastline traditions; Mazama/Budj Bim geochronology; Thom's megalithic-yard corpus and Kendall/Freeman reanalyses; Winn's Vinca sign inventory; the Ishango/Lebombo/Border Cave notched bones; the Aubert/Brumm U-series rock-art dataset). Discipline: every kill names a real corpus/database/dataset and a countable, decidable operation (discovery-curve saturation, permutation/ceiling tests, mark-count instability census, misclassification-corrected CIs, configuration-combinatorics, engraved-fraction, geometry-controlled acoustic permutation, survivorship distribution, distribution-geometric motif tests, bathymetric/tephrochronological consistency, Bayesian quantum reanalysis, repertoire-size thresholds, sampling-vs-origin correlation), thresholds far from 1, disambiguation pinned in the prediction, and explicit coverage guards separating taphonomy from ancient absence. Famous controversies (lunar notation, proto-writing, flute-or-bone) enter as decipherment-instability data, not as settled stories. Sound items stay strictly pre-notational (Palaeolithic aerophones and cave resonance) and disjoint from the concurrent ancient-notated-music wave (Hurrian/Greek/Mesopotamian tuning texts) and from the Asian music-scores wave (medieval/early-modern East/South/Southeast-Asian tablatures). Drops: Goebekli Tepe symbol-recurrence and Jiahu incised marks (held back to avoid a third proto-sign repertoire-threshold item; documented in the report as runnable alternates).

Novelty / leakage triage

anticipated in the literature — this exact test has never been run

Bacon et al. 2023 (Cambridge Archaeological Journal 33/3) published its sequence/species/mark-count supplementary table, and the calendar reading has drawn substantial published critique - most formally the García-Bustos et al. 2023 Discussion in the Journal of Paleolithic Archaeology. But those critiques target tracings, sign identifications and the undefined notion of 'association'; none tabulates the specific >13-mark over-ceiling fraction or runs a species-to-birth-month label-permutation null on the published SI. The discriminating arithmetic the conjecture specifies was not located as run.

B. Bacon, A. Khatiri, J. Palmer, T. Freeth, P. Pettitt & R. Kentridge, 'An Upper Palaeolithic Proto-writing System and Phenological Calendar,' Cambridge Archaeological Journal 33(3) (2023)
A.J. García-Bustos et al., 'Discussion: "An Upper Palaeolithic Proto-writing System and Phenological Calendar" by Bennett Bacon et al. (2023),' Journal of Paleolithic Archaeology 6 (2023), doi:10.1007/s41982-023-00158-8

Predictions

Open registered 2026-07-18 calibration prediction (parent triage: leaked/adjacent)

Registered against the Bacon et al. 2023 (Cambridge Archaeological Journal) supplementary dataset of Upper Palaeolithic dot/line/Y-sign sequences. PREDICTION VERBATIM: Prediction: re-tallying the Bacon et al. 2023 supplementary dataset of dot/line sequences, the fraction of sequences whose mark-count exceeds 13 (the within-year lunar-month ceiling the model imposes) will exceed 10 percent, and a label-permutation test - shuffling the species-to-birth-month assignment 10,000 times - will place the reported mark-count-versus-phenological-month correlation inside the middle 90 percent of the shuffled null (primary clause: the >10 percent over-ceiling fraction; the failed permutation test is the corroborating clause). Coverage guard: if fewer than 40 distinct (species, sequence) pairs survive the authors' own inclusion criteria the test voids for insufficient degrees of freedom rather than resolving.

Resolution criteria: DENOMINATOR (verbatim): the (species, sequence) pairs in the Bacon et al. 2023 supplementary dataset that survive the authors' own inclusion criteria. NUMERATOR: sequences whose mark-count exceeds 13. DATA: download the CAJ article's supplementary dataset (freeze URL + sha256); apply the authors' stated inclusion criteria as documented in the SI. R = fraction of surviving sequences with mark-count > 13. Corroborating (non-verdict): a 10,000-iteration label-permutation test shuffling the species-to-birth-month assignment, reporting whether the observed mark-count-vs-phenological-month correlation falls inside the middle 90% of the shuffled null. CLAUSE PRECEDENCE: (1) INCONCLUSIVE_BY_DESIGN if fewer than 40 distinct (species, sequence) pairs survive the inclusion criteria (the conjecture's own void rule); (2) SUPPORTED if R > 0.10; (3) REFUTED if R <= 0.10. Compute firewalled from threshold and direction.

Known priors disclosure: Triage (2026-07-17) graded adjacent and issued an ERRATUM to the conjecture's own framing: the real published methodological critique is Garcia-Bustos et al. 2023 (Journal of Paleolithic Archaeology), not a 'Meyering 2025' the generator hedged (which could not be located); Garcia-Bustos is a methodological critique, NOT the >13-mark/permutation arithmetic, so the specific test remains un-run. Direction genuinely open; the registrant leans toward the over-ceiling fraction being real given the small dataset.

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